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Jul
3
awarded  Scholar
Jul
3
accepted What research has modelled the difficulty of mental mathematical calculation?
Jul
3
comment What research has modelled the difficulty of mental mathematical calculation?
@JeromyAnglim no, not really, no particular limit. Though generally, mental techniques to do anything else break down to addition, subtraction, multiplication of digits and decimal shifts.
Jun
29
awarded  Student
Jun
29
asked What research has modelled the difficulty of mental mathematical calculation?